推荐回答（1个）
盐碱地适合种植的农作物：甜高粱。
甜高粱，也叫"二代甘蔗"。因为它上边长粮食，下边长甘蔗，所以又叫高粱甘蔗。甜高粱它株高5米，最粗的茎秆直径为4厘米-5厘米，茎秆含糖量很高，因而甘甜可口，可与南方甘蔗媲美。甜高粱可以生食、制糖、制酒，也可以加工成优质饲料。亩产甘蔗2万公斤，产籽种450公斤。它上边长粮食，下边长甘蔗，叶子可作饲草喂牲口，高粱穗脱粒以后所剩的苗子还可以制作笤帚、扫帚、炊帚，真可谓全身是宝。
甜高粱喜温暖，具有抗旱、耐涝、耐盐碱等特性，在全球大多数半干旱地区都可以生长。对生长的环境条件要求不太严格，对土壤的适应能力强，特别是对盐碱的忍耐力比玉米还强，在pH值5.0~8.5的土壤上甜高粱都能生长。甜高粱在10°C以上积温达2 600°C~4 500°C就可以生长。甜高粱是高能作物，一亩甜高粱1天合成的碳水化合物可生产3.2 L酒精，而玉米只能生产1.0L，小麦0.2 L,甜高粱是玉米和小麦的3.2和16倍。其光合转化率高达18%~28%。
全国均有栽培，但以黄河流域以南诸省为多，随着城乡人民生活水平的提高，亦不再作为主食，栽培面积减少，现只见零星栽培。据记载本种原产印度和缅甸，现世界各大洲都有栽培。在中国栽培历史悠久，分布北起黑龙江，南至四川、贵州、云南等省;西自新疆维吾尔自治区，东至江苏、上海等省、市，特别是长江下游地区，尤为普遍。崇明岛盛产甜高粱，被誉为"芦粟之乡"。过去习惯生食其汁液，南方也有用于榨汁熬制糖稀或制作片糖。植物学性状与高粱相似。不同之处是苗期分蘖力强，叶脉有蜡质。呈青灰色，茎髓部含有甜的生汁。再生力强，籽粒较小。
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